1240042333 has 2 divisors, whose sum is σ = 1240042334. Its totient is φ = 1240042332.

The previous prime is 1240042303. The next prime is 1240042357. The reversal of 1240042333 is 3332400421.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 738371929 + 501670404 = 27173^2 + 22398^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1240042333 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1240042303) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 620021166 + 620021167.

It is an arithmetic number, because the mean of its divisors is an integer number (620021167).

Almost surely, 2^1240042333 is an apocalyptic number.

It is an amenable number.

1240042333 is a deficient number, since it is larger than the sum of its proper divisors (1).

1240042333 is an equidigital number, since it uses as much as digits as its factorization.

1240042333 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1728, while the sum is 22.

The square root of 1240042333 is about 35214.2348063961. The cubic root of 1240042333 is about 1074.3492966324.

Adding to 1240042333 its reverse (3332400421), we get a palindrome (4572442754).

The spelling of 1240042333 in words is "one billion, two hundred forty million, forty-two thousand, three hundred thirty-three".